ParticleSystemRenderer.normalDirection

描述

Specifies how to calculate lighting for the billboard.

A value of 0 means Unity calculates lighting as though the billboard was a sphere. This results in the billboard looking more like a sphere. A value of 1 means Unity calculates lighting for the billboard as a flat quad.

using UnityEngine;
using UnityEditor;
using System.Collections;

[RequireComponent(typeof(ParticleSystem))]
public class ExampleClass : MonoBehaviour {

    private ParticleSystem ps;
    private ParticleSystemRenderer psr;
    public float normalDirection = 1.0f;

    void Start() {

        ps = GetComponent<ParticleSystem>();
        psr = GetComponent<ParticleSystemRenderer>();

        psr.material = new Material(Shader.Find("Sprites/Default"));
    }

    void Update() {

        psr.normalDirection = normalDirection;
    }

    void OnGUI() {

        normalDirection = GUI.HorizontalSlider(new Rect(25, 25, 100, 30), normalDirection, 0.0f, 1.0f);
    }
}